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zebra: Combine static_uninstall_ipv[4|6] into one function

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Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2015-10-21 22:19:14 -04:00
parent f2b49ed05e
commit b8a1effadd
1 changed files with 38 additions and 98 deletions
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136
zebra/zebra_rib.c
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@ -2917,7 +2917,7 @@ static_nexthop_same (struct nexthop *nexthop, struct static_route *si)
/* Uninstall static route from RIB. */
static void
static_uninstall_ipv4 (struct prefix *p, struct static_route *si)
static_uninstall_route (afi_t afi, safi_t safi, struct prefix *p, struct static_route *si)
{
struct route_node *rn;
struct rib *rib;
@ -2926,7 +2926,7 @@ static_uninstall_ipv4 (struct prefix *p, struct static_route *si)
struct prefix nh_p;
/* Lookup table. */
table = vrf_table (AFI_IP, SAFI_UNICAST, 0);
table = vrf_table (afi, safi, 0);
if (! table)
return;
@ -2975,23 +2975,46 @@ static_uninstall_ipv4 (struct prefix *p, struct static_route *si)
UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE);
if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
{
/* If there are other active nexthops, do an update. */
if (rib->nexthop_active_num > 1)
{
rib_install_kernel (rn, rib, 1);
redistribute_update (&rn->p, rib, NULL);
}
else
if (afi == AFI_IP)
{
/* If there are other active nexthops, do an update. */
if (rib->nexthop_active_num > 1)
{
rib_install_kernel (rn, rib, 1);
redistribute_update (&rn->p, rib, NULL);
}
else
{
redistribute_delete (&rn->p, rib);
rib_uninstall_kernel (rn, rib);
}
}
else
{
redistribute_delete (&rn->p, rib);
rib_uninstall_kernel (rn, rib);
/* Are there other active nexthops? */
if (rib->nexthop_active_num > 1)
{
rib_install_kernel (rn, rib, 0);
redistribute_update (&rn->p, rib, NULL);
}
}
}
/* Delete the nexthop and dereg from NHT */
nh_p.family = AF_INET;
nh_p.prefixlen = IPV4_MAX_BITLEN;
nh_p.u.prefix4 = nexthop->gate.ipv4;
if (afi == AFI_IP)
{
/* Delete the nexthop and dereg from NHT */
nh_p.family = AF_INET;
nh_p.prefixlen = IPV4_MAX_BITLEN;
nh_p.u.prefix4 = nexthop->gate.ipv4;
}
else
{
nh_p.family = AF_INET6;
nh_p.prefixlen = IPV6_MAX_BITLEN;
nh_p.u.prefix6 = nexthop->gate.ipv6;
}
nexthop_delete (rib, nexthop);
zebra_deregister_rnh_static_nh(&nh_p, rn);
nexthop_free (nexthop, rn);
@ -3140,7 +3163,7 @@ static_delete_ipv4 (struct prefix *p, struct in_addr *gate, const char *ifname,
}
/* Install into rib. */
static_uninstall_ipv4 (p, si);
static_uninstall_route (AFI_IP, SAFI_UNICAST, p, si);
/* Unlink static route from linked list. */
if (si->prev)
@ -3573,89 +3596,6 @@ rib_delete_ipv6 (int type, u_short instance, int flags, struct prefix_ipv6 *p,
return 0;
}
static void
static_uninstall_ipv6 (struct prefix *p, struct static_route *si)
{
struct route_table *table;
struct route_node *rn;
struct rib *rib;
struct nexthop *nexthop;
struct prefix nh_p;
/* Lookup table. */
table = vrf_table (AFI_IP6, SAFI_UNICAST, 0);
if (! table)
return;
/* Lookup existing route with type and distance. */
rn = route_node_lookup (table, (struct prefix *) p);
if (! rn)
return;
RNODE_FOREACH_RIB (rn, rib)
{
if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED))
continue;
if (rib->type == ZEBRA_ROUTE_STATIC && rib->distance == si->distance &&
rib->tag == si->tag)
break;
}
if (! rib)
{
route_unlock_node (rn);
return;
}
/* Lookup nexthop. */
for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
if (static_nexthop_same (nexthop, si))
break;
/* Can't find nexthop. */
if (! nexthop)
{
route_unlock_node (rn);
return;
}
/* Check nexthop. */
if (rib->nexthop_num == 1)
{
rib_delnode (rn, rib);
}
else
{
/* Mark this nexthop as inactive and reinstall the route. Then, delete
* the nexthop. There is no need to re-evaluate the route for this
* scenario.
*/
UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE);
if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
{
redistribute_delete (&rn->p, rib);
rib_uninstall_kernel (rn, rib);
/* Are there other active nexthops? */
if (rib->nexthop_active_num > 1)
{
rib_install_kernel (rn, rib, 0);
redistribute_update (&rn->p, rib, NULL);
}
}
/* Delete the nexthop and dereg from NHT */
nh_p.family = AF_INET6;
nh_p.prefixlen = IPV6_MAX_BITLEN;
nh_p.u.prefix6 = nexthop->gate.ipv6;
nexthop_delete (rib, nexthop);
zebra_deregister_rnh_static_nh(&nh_p, rn);
nexthop_free (nexthop, rn);
}
/* Unlock node. */
route_unlock_node (rn);
}
/* Add static route into static route configuration. */
int
static_add_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate,
@ -3784,7 +3724,7 @@ static_delete_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate,
}
/* Install into rib. */
static_uninstall_ipv6 (p, si);
static_uninstall_route (AFI_IP6, SAFI_UNICAST, p, si);
/* Unlink static route from linked list. */
if (si->prev)